We present a etrospective analysis of arterial embolectomies performed at the Inje University Seoul Paik Hospital. During the period of March 1987 Feburary 1996 twenty-six patients underwent embolectomies, eighteen patients were male and eight patients were female, mean age of patients was 56.8 years. Rest pain was the chief complaint in 24 patients, the remaining two patients complained of long term history of claudication after recovery of acute symtoms. But only 10 patients had sensBrylmotor symtoms. Heart was the most common source of embolization and frequent predisposing factor of embolism was ischemic heart disease in 8 cases and valvular heart disease in 11 cases. The sites of embolization were upper extremities artery in 6 cases, saddle embolism in 2 cases, lower extremities artery in 18 cases and the most common site of embolism was femoral artery in 1 1 cases. Preoperative angiography was taken in the diagnosis and planning of the embolectomy in 1) patients while in the other patient p eoperative angiography was not taken. Only two cases were operated within the golden period of 6 hours and other cases were operated in more than 6 hours after embolization. In all patients, the Fogarty embolectomy catheter was used without bypass surgery via bachial ateriotomy in the embolism of upper extremities artery, bilateral groin approaches in the saddle embolism and transfemoral approach in the embolism of lower extremities artery. However 3 patients were re-operated via transpopliteal approach in the distal poplitiotibial embolism. Eighteen patients received perioperative anticoagulation therapy by heparin or fraxiparine and wafarin was used in 17 patients at the time of discharge and the indication of anticogulation was patients of valvular heat disease andfor atrial fibrillation, peripheral artery atherosclerosis and recurrent embolism. Postoperative results of the embolectomy were as follows: fouteen pateints had excellent results, five cases had symtom improvement after re-operation, B. K. amputation in 1 case who had severe atherosclerosis of lower extremities, recurrent embolism in 1 case and death in 2 cases the cause of death were acute renal failure and cerebral artery embolism, respectively. The complications of the embolectomy were reperfusion syndrome, pseudoaneurysm and intimal dissection in one case each. Conclusively the problems of embolism is delayed diagnosis and increasing number of old aged patient who had suffered from ischemic heart diease. Preoperative angiography was not always needed for embol ectomy. Selective anticoagulation therapy can decrease incidence of re-embolism. In the distal poplitiotibial embolism, embolectomy of tibial artery was difficult.
Recently, the number of coronary artery bypass surgery(CABG) is increasing according to the increasing incidence of coronary artery disease. However, CABG is not a definite corrective surgery; therefore, in some patients, redo-CABG may be required. We retrospectively reviewed our redo-CABG experiences to help future redo-CABG. Material and Method: From January 1991 to April 2001, 14 cases of redo-CABG were performed in Yonsei Cardiovascular Center(M:F=12:2) and mean age was 61,7 $\pm$ 7.1(47-72) years. Mean time from 1st. CABG to redo-CABG was 121.9 $\pm$ 50.5(6.1-179.6) months. Thirteen cases were conventional on-pump CABG and one case was off-pump CABG. In two patients, mitral valve re-replacement and mitral valve repair were performed each. All redo-CABG were performed through mid-sternotomy. During redo-CABG, left internal mammary artery and saphenous vein grafts were used in 6 patients, left internal mammary artery and left radial artery grafts were used in 2 patients, left internal mammary artery and gastroepiploic artery were used in one patient and only greater saphenous veins were used in 5 cases(In one case, cephalic vein was also used). The number of mean distal anastomosis was 2.1 $\pm$ 0.9(1-4). Result: There were no operative death and no perioperative myocardial infarctions and cerebrovascular accidents or other heart related complications. Mean follow up duration was 40.1 $\pm$ 38.6(1.1-118.5) months. During follow up period, angina was re-developed in one patient 13 months after operation. Two patients died of end-stage renal failure 14.8 months and 116.3 months after redo-CABG, respectively. During follow up period, coronary angiography was performed in 3 patients, and all grafts were patent. At last follow up, mean Canadian class was 1.3. Kaplan-Meier survival at 9 years was 90.0 $\pm$ 9.5% and event free survival at 9 years was 71.4 $\pm$ 6.9%. Conclusion: After redo-CABG, all patients improved their angina symptom and daily activity. And long-term survival after redo-CABG was excellent. Therefore, if patients have indications for redo-CABG, thenredo-CABG must be strongly recommended and performed.
In rat kidney, the changes in concentrations of nucleotides and their derivatives during ischemia induced by renal artery ligation was measured quantitatively with high performance liquid chromatography(HPLC). After the ligation of renal artery for 60minutes, the concentrations of the nucleotides and derivatives were measured. In ischemic tissue, IDP was significantly decreased from $217.4{\pm}12.68{\mu}g$ in control to $80.7{\pm}18.39{\mu}g$ (p<0.01) ; ATP, $307.2{\pm}56.63{\mu}g$ to $47.6{\pm}5.95{\mu}g$ (p<0.01) ; ADP+AMP, $227.1{\pm}7.98{\mu}g$ to $61.4{\pm}3.92{\mu}g$(P<0.01); $NAD^+$, $217.9{\pm}4.49{\mu}g$ to $126.6{\pm}10.44{\mu}g$(P<0.01) ; GTP, $202.5{\pm}23.76{\mu}g$ to $117.7{\pm}14.24{\mu}g$ (P<0.05) ; GMP, $54.5{\pm}9.03{\mu}g$ to $23.7{\pm}0.46{\mu}g$(p<0.05), and inosine, $16.6{\pm}3.45{\mu}g$ to $7.8{\pm}0.87{\mu}g$ (P<0.05). But hypoxanthine and xanthine were significantly increased from $113.0{\pm}15.58{\mu}g$ to $159.7{\pm}12.07{\mu}g$ (P<0.05) and from $87.7{\pm}6.77{\mu}g$ to $173.1{\pm}12.52{\mu}g$ (P<0.01). In ischemic kidney, concentration of ATP was decreased to 39.9% of control at 10 minutes, 19.8% at 30 minutes, and 15.5% at 60 minutes, and ADP+AMP were decreased to 70.3% of control at 10 minutes, 67.3% at 30 minutes, and to 27.0% at 60 minutes, but hypoxanthine and xanthine were increased to 121.5% and 127.1% at 10 minutes, 126.0% and 174.4% at 30 minutes, and 141.4% and 197.3% at 60 minutes Total adenosine nucleotides were decreased to 20.3% of control during 60 minutes of ischemia, but hypoxanthine and xathine were increased to 157.5 % of control. These results suggest that the changes in the concentration of nucleotides and their metabolic derivatives are useful indices of the extents of tissue ischemia in rat kidney.
Between April 1986 and September 1990, 34 patients with a single or dominant right ventricle underwent modified Fontan procedure for definite palliation in Seoul National University Children`s Hospital. Their age at operation ranged from 8 months to 14 years [Mean 5.5 years]. The ventricular chamber was solitary and of indeterminate trabecular pattern in 6 patients. 28 patients had posteriorly located rudimentary chamber, all of which were trabecular pouches having no communication with outlet septum. The patterns of atrioventricular connection were common inlet[9], double inlet [11], left atrioventricular valve atresia [12] and right atrioventricular valve atresia with L-loop [2]. Pulmonary outflow tracts were atretic in 7 patients and stenotic in 26 patients. Major associated anomalies included anomalous systemic venous drainage [15], dextrocardia [12] and total anomalous pulmonary venous connection[3]. Shunt operations were previously performed in 13 patients and pulmonary artery banding and atrial septectomy in 1 patients. Surgery included intraatrial baffling in 26 patients, bidirectional cavopulmonary shunt in 13 patients, atrioventricular valve obliteration in 3 patients and atrioventricular valve replacement in 3 patients. Central venous pressure measured postoperatively at intensive care unit ranged from 18cm H2O to 28cm H2O [mean 23.2cm H2O]. Hospital mortality was 35.3% [12/34], all died out of low output syndrome. Suspected causes of low output syndrome include ventricular dysfunction [8], hypoplastic or tortuous pulmonary artery [2] and elevated pulmonary vascular resistance [2]. 19 patients had 31 major complications including low output syndrome [18], arrhythmia [4], acute renal failure [3] and respiratory failure [3]. Mortality rate was significantly higher in the groups receiving intraatrial baffling and AV valve replacement respectively [p<0.05]. 20 patients were followed up postoperatively with the mean follow-up period 15.0$\pm$11.6 months. There were no late death and follow-up catheterization was performed in 10 patients. Mean right atrial pressure was 15.4$\pm$6.8mmHg and ventricular contraction was reasonable in all but one case. Thus, Fontan principle can be applied successfully to all the patients with complex cardiac anomaly of single ventricle variety and better results can be anticipated with judicious selection of patient and improvement of postoperative care.
The effects of deep hypothermia and circulatory arrest during aortic arch reconstruction are associated with potential neurologic and myocardial injury. We describe a surgical technique that two patients underwent a modified Norwood procedure without circulatory arrest and myocardial ischemia. One was 13-day-old female patient, weighing 3.1kg, having a variant of hypoplastic left heart syndrome and another was 38-day-old male patient, weighing 3.4 kg, diagnosed Taussig-Bing anomaly with severe aortic arch hypoplasia, coarctation of the aorta, and subaortic stenosis. The arterial cannula was inserted in innominate artery directly. During Norwood reconstruction, regional high-flow perfusion into the inominate artery and coronary perfusion were maintained and there were no neurologic, cardiac, and renal complications in two patients. This technique may help protect the brain and myocardium from ischemic injury in patients with hypoplastic left heart syndrome or other arch anomalies including coarctation or interruption.
Park, Sung-Min;Cho, Seong-Joon;Ryu, Se-Min;Lee, Kyung-Hak;Kang, Gu
Journal of Chest Surgery
/
v.45
no.2
/
pp.73-79
/
2012
Background: Aortic cross clamping is associated with spinal cord ischemia. This study used a rat spinal cord ischemia model to investigate the effect of distal aortic pressure on spinal cord perfusion. Materials and Methods: Male Sprague-Dawley rats (n=12) were divided into three groups. In group A (n=4), the aorta was not occluded. In groups B (n=4) and C (n=4), the aorta was occluded. In group B the distal aortic pressures dropped to around 20 mmHg. In group C, the distal aortic pressure was decreased to near zero. The carotid artery and tail artery were cannulated to monitor the proximal aortic pressure and the distal aortic pressure. Fluorescent microspheres were used to measure the regional blood flow in the spinal cord. Results: After aortic occlusion, blood flow to the cervical spinal cord showed no significant difference among the three groups. In groups B and C, the thoracic and lumbar spinal cord and renal blood flow decreased. No microspheres were detected in the thoracic and lumbar spinal cord of group C. Conclusion: The spinal cord blood flow is dependent on the distal aortic pressure after thoracic aortic occlusion.
In 1835,Schlesinger first described a case of subisthmlc lower thoracic aortic coarctation. Since Olim`s unsuccessful reconstructive surgery in 1949 and Beattie`s first successful resection with homograft replacement on such a lesion in 1951 were reported,about 20 cases of atypical aortic coarctation had been treated by definitive surgery until 1964. In Korea, only 2 cases of atypical aortic coarctation treated by bypass graft were reported until now. This is the third case-report treated by reconstructive surgery. The patient,11 year old girl who had 2 year history of headache, visual weakness, intermittent claudlcation, and general weakness, was first diagnosed of having the hypertension due to atypical coarctation by the findings of high blood pressure[170/110mmHg] at the upper extremity and weak pulsation on both femoral artery,murmur on the epigastrium, absence of aortic knob, and aorto graphy. Aortography demonstrated the isolated segmental narrowing[length 5cm, diameter 0.4cm] at the level of aortic hiatus 2cm above celiac arterial origin, the dilated right 9th, 10th, 11th intercostal arteries with multiple dimunitive collaterals and no associated abnormalities in the other arteries. Preoperatlve positive findings were strong positive mantoux test, high AST[720 units]. transient mild cardiomegaly with right lung infiltration on chest X-ray and suggestive left ventricular hypertrophy on ECG. On December 1970, through separate left thoracotomy and abdominal approach, bypass graft between descending thoracic aorta and abdominal aorta below renal artery was performed. The operation was first successful with satisfactory reduction of hypertension on the upper trunk[postoperatlve 130/80mmHg] and strong pulsation on the lower extremities[postop. O, postop. 140/100mmHg]. However,6 weeks after surgery, she expired of sudden hemoptysis and shock due to anastomotic leak within the thorax. Operative finding disclosed that the affected aorta was firm, with rich periaortic fibrosis and the outer diameter of stenotic site was not attenuated. Histopathology of the resected specimen was also compatible with primary arteritis.
Rhizoma Arisaematis, Lignum Akebiae, Rhizoma Zedoariae, Cortex Eucommiae, Folium Perillae, Radix Sophorae Subprostratae, Radixi, Radix Ledeboutriellae, Rhizoma Atractylodis, Herba Ephedrae, Radix Puerariae and Radi Aconitx Bupleuri have been used in Korea for many centuries as a treatment for various disease. The purpose of the present study is to determine the effect of several herbs on norepinephrine(NE) induced blood vessel contraction in rabbits and pigs. Rabbit(2 kg, male) were killed by $CO_2$ exposure and a segment (8-10mm) of each rabbit was cut into equal segments and mounted in a tissue bath. Contractile force was measured with force displacement transducers under 2-3 g loading tension. The dose of norepinephrine(NE) which evoked 50% of maximal response $(ED_{50})$ was obtained from cumulative dose response curves for NE $(10^{-6}{\sim}10^{-3}M)$. Contractions evoked by NE $(ED_{50})$ were inhibited significantly by Rhizoma Arisaematis, Lignum Akebiae, Rhizoma Zedoariae, Cortex Eucommiae, Folium Perillae, Radix Sophorae Subprostratae and Herba Ephedrae in abdominal aorta. Contractions evoked by NE $(ED_{50})$ were inhibited significantly be Lignum Akebiae, Rhizoma Zedoariae, Cortex Eucommiae, Herba Ephedrae, Radix Puerariae and Radix Bupleuri in femoral artery. Contractions evoked by NE $(ED_{50})$ were inhibited significantly by Radix Sophorae Subprostratae, Radix Aconiti and Herba Ephedrae in renal artery. These results indicate that each herb can relax NE induced contraction of rabbit and pig blood vessel selectively, and that this relaxation relates to Gui-Gyung(歸經).
Yohan Kwon;Jinoo Kim;Je-Hwan Won;Seong Ho Kim;Jeong-Eun Kim;Sung-Joon Park
Journal of the Korean Society of Radiology
/
v.82
no.3
/
pp.551-561
/
2021
Atherectomy has become a promising treatment option for peripheral artery disease caused by diabetes mellitus or end-stage renal disease. Atherectomy refers to the removal of atheromatous tissue by mechanical method, resulting in an enlarged lumen of the treated blood vessel. Based on this method, the term is limited to the percutaneous minimally invasive approach, and there are currently two types of atherectomy devices available in Korea. The increased prevalence of atherectomy has led to the concept of "vascular preparation" and a new treatment concept of "leave nothing behind." Various studies have proven the safety and effectiveness of atherectomy; however, there are some limitations. We need to remain focused on patient selection and subsequent large-scale research.
Background: The number of elderly patients undergoing coronary artery bypass grafting (CABG) is increasing. Elderly patients are at increased risk for a variety of perioperative complications and mortality. We identified determinants of operative complications and mortality in elderly patients undergoing CABG. Material and Method: Between January 1995 and July 2003, 91 patients older than 75 years underwent isolated CABG at Asan Medical Center. There were 67 men and 24 women with mean age of $77.0\pm2.4$ years. Thirty clinical or hemodynamic variables hypothesized as predictors of operative mortality were evaluated. Result: CABG was performed under emergency conditions in 5 patients. The internal thoracic artery was used in 85 patients and 10 patients received both internal thoracic arteries. The mean number of distal anastomosis was 3.7 per patient. Operative mortality was $3.3\%$. Twenty-two patients had at least one major postoperative complication. Low cardiac output syndrome was the most common complication, followed by reoperation for bleeding, pulmonary dysfunction, perioperative myocardial infarction, stroke, acute renal failure, ventricular arrhythmia, upper gastrointestinal bleeding, infection, and delayed sternal closure. None were the predictors of mortality. Renal failure, peripheral vascular disease, emergency operation, recent myocardial infarction, congestive heart failure, New York Heart Association (HYHA) class III or IV, Canadian Cardiovascular Society (CCS) angina scale III or IV, and low left ventricle ejection fraction below $40\%$ were univariate predictors of overall complications. Actuarial probability of survival was $94.9\%,\;89.8\%,\;and\;83.5\%$ at postoperative 1, 3 and 5 years respectively. During the follow-up period $93.3\%$ of patients were in NYHA class I, or II and $91.1\%$ were free from angina. Conclusion: Although operative complication is increased, CABG can be performed with an acceptable operative mortality and excellent late results in patients older than 75 years.
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